The Former head of the US Geological Survey (USGS), now editor-in-chief ofScience magazine (Marcia McNutt), looked at the economics and re-evaluated her position on the Keystone XL project. She now endorses building a pipeline to transport crude oil from Canada’s oil sands to the United States.

Listen to the full NPR interview with Ms. McNutt.

Marcia McNutt discusses in the interview with NPR, that if the Keystone XL pipeline were not built, the oil would be carried by rail and road tankers, which would be more environmentally damaging.